Free port scanner
RedScore checks what the internet can already see on your live hostname.
People search for a port scanner when they want to know what is exposed. RedScore runs a passive outside-in scan in about 60 seconds and ranks public exposure signals with your full RedScore. No signup and no invasive probing on the free scan.
Scan your domainFree scan · No signup · Results in ~60 seconds · Opens /lookup
example-corp.com
✓ scan complete · grade D · 4 issues
AI summary
DMARC enforcement is missing, which leaves spoofing open. SPF is too permissive. Several key web security headers are absent.
Why exposure checks matter
Buyers, insurers, and opportunistic scanners look for public exposure before they ever talk to your team. RedScore gives you the outside-in view so you can close obvious gaps before a review or incident.
Built for fast answers
Go to /lookup, enter your domain, and get graded exposure signals plus nine other public security areas.
RedScore reads public exposure indicators visible from the internet on your domain.
See which public gaps matter most without opening five different security tabs.
Passive scan only. No exploit attempts and no credentials required.
Domain owners can claim the site to unlock complete findings and monitoring.
What you get
You get a 0-100 score, letter grades across ten public security areas, and a short summary that includes exposure posture alongside DNS, email, headers, and TLS.
63 / 100
Grade C
example-corp.com
AI summary
Cookie settings are weak and server headers reveal stack details. Email spoofing is plausible with incomplete SPF and DMARC.
What RedScore checks today
This is not an invasive port sweep, authenticated pentest, or exploit scan. The free scan shows safe summary grades. Claim your domain to unlock detailed exposure findings.
After the free scan
Anonymous scans show category grades and safe summaries. Claim the domain to see full exposure detail, schedule rescans, and get alerts when posture changes.
FAQ
